412 Mr. E. A. Smith on 



Lima bullifera, Deshayes. 



Lima bullifera, Deshayes, in Maillard's He de la Reunion, vol. ii. p. 30, 

 pi. xxxi*. figs. 9, 10 (1863). 



This species is remarkable on account of the scales on the 

 costse taking the form of little hollow globules and having 

 the appearance of perfectly rounded solid tubercles. In the 

 Henderson Island worn shells these are only preserved in 

 one or two specimens. Deshayes was under the impression 

 that the species never attained to a large size, and he gives 

 the length as only 20 mm. The largest example from Hen- 

 derson Island, however, is 48 mm. long. The number of 

 costa3 is said to be twenty, but in the specimens under 

 examination there are about twenty-four to twenty-seven. 



A remarkable feature in these shells, not noticed by 

 Deshayes, is that the elongate muscular impression within 

 the valves is of a yellowish colour. This, however, is more 

 evident in some specimens than in others, and consequently 

 in the smaller and possibly young shells described by 

 Deshayes this colouring might not have been present or even 

 overlooked. 



At first sight this species, as remarked by its founder, 

 might be taken for the well-known L. squamosa, Lamk., the 

 Ostrea lima of Linnaeus. 



The occurrence of L. bullifera at such distant localities as 

 Reunion Island and Henderson Island is not surprising, 

 since the distribution of L. squamosa is equally remarkable, 

 being practically world-wide (see Lischke, Japan. Meeres- 

 Conch. Theil i. p. 162; Smith, 'Challenger' Lamelli- 

 branchiata, p. 287) „ 



Broderipia iridescens (Broderip). 



Scutella iridescens, Broderip, Proc. Zool. Soc. 1834, p. 48. 

 Broderipia iridescens, Pilsbry, Man. Conch, vol. xii. p. 46, pi. i. 

 figs. 5-8, pi. ii. figs. 41, 42. 



Hah. Grim wood's Island, Pacific Ocean {Broderip) ; 

 Marutea ( = Lord Hood Island) and Vahitahi Island, Pau- 

 motu group (Couturier, J. de Conch. 1907, p. 172) ; lie 

 Reunion [Deshayes). 



I have been unable to discover any record of a Grimwood 

 Island, but it is probably in the South Pacific as recorded by 

 Pilsbry. He does not, however, refer it to any particular 

 group of islands. 



The dimensions of the single specimen from Henderson 



